Imagine taking a cotton ball, wetting it in mild sugar water, and putting an edamame bean in the center. That’s what it tastes, and feels like. The seed usually already starts germinating in the fruit and tastes like edamame. The flesh clings to the seed which is why you get an earthy edamame taste when you eat it.
IMO (at least for the one I tried, I think inga Edulis?) the fruit is good but the flesh ratio was too low, too clingstone, and I dont like the earthy edamame flavor that comes from the large seed. The seed easily breaks apart when you eat it. Overall I rate it 6/10, if I saw it in the store I wouldn’t buy it unless it was a new variety I haven’t tried. Also the tree is supposed to be gigantic, I wouldn’t waste space on it in the ground, although it is a nitrogen fixing tree.
There are other varieties too that are supposed to have a better flesh ratio and maybe more freestone. I planted one of the seeds in a pot and I’m growing inga laurina in a pot which is supposedly a better variety.